time ago about the concerns he has over his opponent's plan for medicare, while at wong man's paul ryan's event in iowa today things took an emotional term when a veteran asked him about his social security benefits and why the government taxes the only source of income for a man who dedicated his life to defending his country. >> i served in the air force in 65 straight out of high school, and i learned in the military -- [applause] >> -- the skills that i had to take me through life. i served in grenada, and i served in iran, and i live off of social security. i live off a thousand dollars a month, and i cannot understand why this country that i gave my life for feels that they should tax me twice for social security. they already taxed me for that and they take a third of it back when they give me that check. >> you know i'm glad you brought that up, sir. [applause] >> now, there is a tax on social security benefits he's talking about. i voted consistently to repeal that tax because you know what you already paid for this. it's your benefit, you already paid tax on this money once befo